Type

Journal Article

Authors

Jeremiah J. Sheehan
Alan L. Kelly
Kieran N. Kilcawley
David T Mannion
Paul D. Cotter
Conor Feehily
Anna Pietrzyk
Prabin Lamichhane

Subjects

Agriculture & Food Science

Topics
organic compounds volatile compounds organic milk composition effect butyric acid milk composition gas chromatography mass spectrometry solid phase microextraction

Effect of milk centrifugation and incorporation of high heat-treated centrifugate on the microbial composition and levels of volatile organic compounds of Maasdam cheese. (2017)

Abstract Centrifugation is a common milk pretreatment method for removal of Clostridium spores which, on germination, can produce high levels of butyric acid and gas, resulting in rancid, gassy cheese. The aim of this study was to determine the effect of centrifugation of milk, as well as incorporation of high heat-treated centrifugate into cheese milk, on the microbial and volatile profile of Maasdam cheese. To facilitate this, 16S rRNA amplicon sequencing in combination with a selective media-based approach were used to study the microbial composition of cheese during maturation, and volatile organic compounds within the cheese matrix were analyzed by HPLC and solid-phase microextraction coupled with gas chromatography-mass spectrometry. Both culture-based and molecular approaches revealed major differences in microbial populations within the cheese matrix before and after warm room ripening. During warm room ripening, an increase in counts of propionic acid bacteria (by ∼10
Collections Ireland -> Teagasc -> PubMed

Full list of authors on original publication

Jeremiah J. Sheehan, Alan L. Kelly, Kieran N. Kilcawley, David T Mannion, Paul D. Cotter, Conor Feehily, Anna Pietrzyk, Prabin Lamichhane

Experts in our system

1
Jeremiah J. Sheehan
Teagasc
Total Publications: 32
 
2
Alan L. Kelly
Teagasc
Total Publications: 63
 
 
4
David T Mannion
Teagasc
Total Publications: 4
 
5
Paul D. Cotter
Teagasc
Total Publications: 263
 
6
Conor Feehily
Teagasc
Total Publications: 4
 
7
Prabin Lamichhane
Teagasc
Total Publications: 4